2230 超塑性ダイレス引抜きにより創成したマイクロチューブの表面性状(S31-2 最新のチューブフォーミングとその動向(2),S31 最新のチューブフォーミングとその動向)

概要

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In this study, fabrication process of superfine and high quality microtube using superplastic dieless drawing is studied experimentally. In particular, we focus on the effect of drawing pass number and grain size on surface roughness of superplastic microtube in dieless tube drawing process. Superplastic material used is Al-78Zn (SPZ) alloy tube with outer diameter of 2mm and wall thickness of 0.5mm. Through four-pass dieless drawing, a microtube with outer and inner diameters of 190μm and 91μm respectively can be fabricated successfully. As a result, it is found that the surface roughness of microtube maintains a constant value in the dieless drawing process. On the contrary, the grain size grows greatly as the pass number increases.
社団法人日本機械学会の論文
2005-09-18